新しい「日本語能力試験」N4文法のまとめ 3.2.1

1. The detailed explanation matches grammar according to JLPT N4, and the grammatical contents can be grasped easily.
2. The detailed explanation sticks in Chinese, and while being early, a learner can understand a point and practice more.
3. Even if it's difficult to remember, even if it isn't understood, marking the point, and when studying repeatedly, they become good.
4. You can study, and more convenient learning is also fine for a learner right now in a short period.
5. You can practice right now after there is a new collection of problem, and grammar is studied.